草业学报Issue(4)：195-203,9.DOI:10.11686/cyxb20140424
AM真菌摩西球囊霉对盐胁迫条件下高羊茅生长特性的影响
Effects of arbuscular mycorrhizal fungus Glomus mosseae on the growth characteristics of Festucaarundinacea under salt stress conditions
摘要
Abstract
As the global changes,the soil salinization becomes more and more serious and directly impacts plant growth.Festuca arundinacea is one of important lawn plants influenced with arbuscular mycorrhizal (AM) fungi and soil salinization.So how to improve the salt tolerance of F. arundinacea,is one of the urgent prob-lems to be solved.The purpose of the present research was to evaluate the effects of AM fungi on improving salt tolerance of F. arundinacea,and to explore the mechanism of increasing salt tolerance of F. arundinacea by AM fungi.F. arundinacea seeds were inoculated with AM fungus Glomus mosseae and treated with differ-ent NaCl concentration (0%,0 .8%,1 .2% and 1 .6%)under pot conditions in a greenhouse.The activity of antioxidant enzymes (SOD,POD and CAT),contents of antioxidant (AsA),soluble sugar,proline,nutrient elements (N,P,S,Zn,K,Ca and Mg),ABA (abscisic),IPA (isopentenyl adenosine),IAA (indole-3-acetic acid),GA (gibberellin)and K/Na,Mg/Na,Ca/Na increased,in leaves of F. arundinacea plants colonized with G. mosseae,while the content of methane dicarboxylic aldehyde (MDA),Na+ and Cl- decreased,as well as membrane permeability,compared to the noninoculation control.It was concluded that AM fungi could im-prove plant salt tolerance through improving nutrient absorption,osmotic regulation and the reaction of antiox-idant system of plants,maintaining hormonal balance,reducing toxicity of Na+ and Cl- and damage caused by oxidative stress.关键词
丛枝菌根真菌/高羊茅/耐盐性/生长特性/抗氧化系统Key words
arbuscular mycorrhizal/Festuca arundinacea/salt tolerance/growth characteristics/antioxidant system分类
农业科技引用本文复制引用
杨海霞,刘润进,郭绍霞..AM真菌摩西球囊霉对盐胁迫条件下高羊茅生长特性的影响[J].草业学报,2014,(4):195-203,9.基金项目
青岛市科技计划基础研究项目［12-1-4-5-（4）-jch］和青岛农业大学研究生创新计划项目（QYC201316）资助。 （）
